Cleanroom Lighting and Electrical Equipment

Isolation Transformer

A dry-type transformer that provides galvanic separation, voltage adaptation and optional electrostatic shielding for sensitive cleanroom loads.

Galvanically Isolated Windings
Low-Noise Laminated Core
Electrostatic Shield Option
Enclosed Finger-Safe Terminals

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Product Introduction

The isolation transformer uses separate primary and secondary windings on a laminated magnetic core. Encapsulated or varnish-impregnated coils resist moisture and vibration, and an optional copper electrostatic shield is bonded to earth between windings to attenuate common-mode noise. The assembly is housed in a non-ventilated or guarded enclosure with clearly separated input and output terminals.

Key Features

Physically separate windings prevent a direct conductive path between input and output.

Encapsulated coils support consistent insulation and lower audible vibration.

An interwinding shield diverts coupled high-frequency noise to protective earth.

Finger-safe terminal blocks organize primary taps and secondary connections.

Rubber isolation mounts reduce mechanical hum transmitted to the floor or wall.

Customer Product Concerns

Sensitive equipment can be affected by ground noise, voltage mismatch and transformer hum even when the nominal supply remains available.

Common-mode electrical noise enters instrument reference circuits.Galvanic separation and an optional grounded shield reduce capacitive noise transfer.

A transformer enclosure transmits audible hum into a quiet laboratory.A welded core, coil impregnation and resilient mounting pads limit vibration.

Exposed terminal studs create accidental-contact risk.A guarded wiring compartment uses labeled finger-safe connectors.

Dust enters an open ventilated enclosure near a clean process.An encapsulated non-ventilated configuration closes the core and coil from room air.

Typical Applications

Sensitive analytical instrumentsCleanroom control powerMedical-device test benchesNoise-sensitive monitoring systems

Technical Parameters

Typical configurable construction ranges for an isolation transformer are listed below.

Core Material	Grain-oriented silicon-steel core with separate copper windings, insulation system and optional copper electrostatic shield
Panel Thickness	200-650 mm enclosed transformer depth
Effective Width	250-900 mm cabinet width
Maximum Length	Up to 1200 mm overall enclosure height
Steel Facing Thickness	1.0-2.0 mm powder-coated steel or stainless enclosure
Core Density	Approximately 7600-7700 kg/m³ for laminated electrical steel core material
Thermal Conductivity	20-30 W/(m·K) for laminated silicon steel across the core assembly
Surface Finish	Light-grey or white powder-coated enclosure with copper earth and terminal markings
Joint Type	Bolted or welded core-and-coil assembly on resilient mounts with segregated terminal compartment
Customization	Available based on the intended application and operating environment.

Available Options

Single- or three-phase designEncapsulated or ventilated dry typeElectrostatic shieldInput and output voltage tap selection

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